Items textures

I'm looking for the textures (.jpg I think) of items of the games. I searched in this folder : C:\Riot Games\League of Legends\RADS\projects\lol_air_client\releases\0.0.1.199 But I didn't find anything else that spash arts, runes, ect.. I didn't find items( ). If someone knows where do they are hidden, it will help me a lot ! (i'm french, so sorry for english mistakes).